期刊
ASTROPHYSICAL JOURNAL
卷 682, 期 2, 页码 985-1003出版社
UNIV CHICAGO PRESS
DOI: 10.1086/588749
关键词
galaxies : distances and redshifts; galaxies : high-redshift; infrared : galaxies
We present a K-s-selected catalog, dubbed FIREWORKS, for the Chandra Deep Field-South ( CDF-S) containing photometry in the U-38, B-435, B, V, V-606, R, i(775), I, z(850), J, H, K-s, [3.6 mu m], [4.5 mu m], [5.8 mu m], [8.0 mu m], and MIPS [24 mu m] bands. The imaging has a typical K-s,AB(tot) limit of 24.3 mag ( 5 sigma) and coverage over 113 arcmin(2) in all bands and 138 arcmin(2) in all bands but H. We cross-correlate our catalog with the 1 Ms X-ray catalog by Giacconi et al. ( 2002) and with all available spectroscopic redshifts to date. We find and explain systematic differences in a comparison with the z(850) + K-s''-selected GOODS-MUSIC catalog that covers similar to 90% of the field. We exploit the U-38-to-24 mu m photometry to determine which K-s-selected galaxies at 1.5 < z < 2.5 have the brightest total IR luminosities and which galaxies contribute most to the integrated total IR emission. The answer to both questions is that red galaxies are dominating in the IR. This is true no matter whether color is defined in the rest-frame UV, optical, or optical-near-IR. We do find, however, that among the reddest galaxies in the rest-frame optical, there is a population of sources with only little mid-IR emission, suggesting a quiescent nature.
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